6 
Cerophorus (Oryx) leucopheus, De Blainv. Bull. Soc. Philom. 1816, p. 75. 
Antilope (Egocerus) leucophea, Desm. Mamm. i. p. 475 (1822). 
Aigocerus leucopheus, A. Sm. 8. Afr. Quart. Journ. ii. p. 185 (1834) ; Gray, Knowsl. 
Men. p. 16 (1850); Fitz. SB. Wien, lix. pt. 1, p. 177 (1869) ; Huet, Bull. Soc. 
Acclim. (4) iv. p. 483 (1887); Jent. Cat. Ost. Leyd. Mus. (Mus. Pays-Bas, ix.) 
p. 185; id. Cat. Mamm. Leyd. Mus. (t. c. xi.) p. 166 (1892). 
Hippotragus leucopheus, Sund. Pecora, K. Vet.-Ak. Handl. 1844, p. 197 (1846); id. 
Hornschuch’s Transl., Arch. Skand. Beitr. 1. p. 148; Reprint, p. 72 (1848) ; 
Kohl, Ann. Mus. Wien, i. p. 83 (1886) ; Bryden, Kloof and Karroo, p. 290 (1889) ; 
Flow. & Lyd. Mamm. p. 3438 (1891); Lyd. Horns and Hoofs, p. 245 (1893); Trouess. 
Cat. Mamm. fase. iv. p. 952 (1898). 
Antilope capensis, P. L. S. Mill. Natursyst. Suppl. p. 52 (1776). 
Cemas glaucus, Oken, Lehrb. Nat. ii. pt. 2, p. 740 (1816). 
Antilope glauca, Forst. Descr. Anim. p. 391 (1844). 
Vernacutar Name :—Blawe-bock of Dutch (Le Vaillant). 
Size much less than in the two following species; height at withers from 
45 inches (¢ in Paris) to 40 inches (2 in Vienna). General colour bluish 
grey. Forehead brown ; upper lip and a patch in front of the eye lighter 
than the general colour, but there are none of the marked black and white 
contrasts so prominent in H. equinus. Ears not so long or so pointed as in 
H. equinus, and without black tufts at their tips. Mane on nape of neck 
short, inconspicuous, directed forward; throat-mane almost or quite absent. 
Belly dull whitish, not contrasted with the sides. Limbs with an inconspicuous 
darker line down their anterior surfaces. ‘Tail-tuft greyish, but little darker 
than the general colour. 
Skull probably merely differing from that of H. equinus by its smaller size, 
but, so far as is known, no museum possesses an example of it. 
Horns like those of H. equinus, but much smaller and more slender; 
perhaps rather longer in proportion to the size of the animal. Those of the 
Paris specimen (a male) measure 214 inches in length round the curve and 
have 28 rings upon them. ‘The pairin the British Museum are rather shorter. 
Hab. Cape Colony only. (Exterminated at the end of the last century.) 
The Blue-buck, like the Quagga (Hquus quagga), belongs to the category 
of larger animals that have become’ extinct within the historic period. 
While the Square-lipped Rhinoceros (hinoceros simus) and the Mountain 
